Tesis sobre el tema "Système à plusieurs composants"
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Dieulle, Laurence. "Fiabilité d'un système de plusieurs groupes de composants avec maintenance à des instants aléatoires". Université de Marne-la-Vallée, 1999. http://www.theses.fr/1999MARN0045.
Texto completoChachoua, Elie. "Théories de l'élasticité pour l'astrophysique et la cosmologie". Paris 6, 2006. http://www.theses.fr/2006PA066637.
Texto completoIn this thesis, we treat some of the aspects of Elasticity theory in the context of astrophysics and cosmology. The first part of the manuscript is concerned with astrophysics, and more specifically with the internal part of a neutron star’s crust. It is dedicated to the description of multicomponent systems composed of a solid which is embedded in a mixture of n fluids. After a short introduction, we present the theoretical framework on which our formalism is based. As a pedagogical example, we proced to the construction of a variational description for a single perfectly-elastic solid , with and without a “frozen-in” magnetic field. Next we generalize the theory to allow for multicomponent systems. Focusing the astrophysical case of a solid-superfluid system, we show how the strict aplication of variational principle can be modified at few costs to describe four different types of conservative models, as well as dissipative ones. The second part of the manuscript deals with the application of the simple perfectlyelastic solid case in the context of cosmology, and more specifically to the interpretation of dark energy as a solid of topological defects - and idea orginially introduced by Bucher and Spergel. A stability analysis is done by computing the rigidity moduli in the case of isotropic and cubic symmetries. Finally, we mention recent results obtained by Carter on microscopical theories that could lead to the solid configurations envisaged by Bucher
Nonne, Héloïse. "Phases isolantes de Mott des atomes froids fermioniques unidimensionnels à plusieurs composantes". Thesis, Cergy-Pontoise, 2011. http://www.theses.fr/2011CERG0524/document.
Texto completoThis thesis is devoted to the investigation of the Mott insulating phases arising in onedimensionalmulticomponent fermionic cold atoms systems. The first part of this work isthe study of a model with alkaline-earth cold atoms with nuclear spin I = 1/2. Thoseatoms enjoy an additional orbital degree of freedom, due to the presence of a metastableexcited state ; they thus have a total of four components. Our investigation is carried athalf-filling, at strong and at weak couplings by means of analytic methods (conformaltheory, bononization, refermionization, renormalisation group). We found that the zerotemperature phase diagram of the system is very rich : it contains seven Mott insulatingphases, among which three are particularly interesting, since they display a hiddenorder, related to the Haldane physics of the antiferromagnetic spin-1 Heisenberg chain.Our conclusions are checked against numerical simulations, that were carried out with thedensity matrix renormalization group (DMRG) algorithm for intermediate couplings. Thecomparison shows an adiabatic continuity between the different regimes. A similar studyfor a model of cold atoms with hyperfine spin-3/2 highlights the Haldane physics in thecharge sector of the degrees of freedom, with an effective model given by an antiferromagneticpseudo-spin-1 chain. This analysis provides us an opportunity to investigate thezero temperature properties of the SO(5) bilinear-biquadratic Heisenberg chain. We showthe presence of two gapped phases : one is dimerized, the other has a hidden symmetry(Z2 × Z2)2 and spin-3/2 edge states, and they are separated by a critical point that belongsto the SO(5)1 universality class. Finally, we investigate half-integer hyperfine spincold atoms systems with 2N components which generalized the results obtained for thehyperfine spin-3/2 model. This leads us to find an even/odd effect according to the parityof N, very similar to the even/odd effect of spin chains, discovered by Haldane in 1983
Treglia, Robert. "Système automatique de caractérisation paramétrique de composants semiconducteurs". Aix-Marseille 3, 1989. http://www.theses.fr/1989AIX30065.
Texto completoDuborjal, Hervé. "Étude de l'expression de plusieurs constituants du système OXPHOS mitochondrial". Grenoble 1, 2000. http://www.theses.fr/2000GRE10144.
Texto completoMartinod, Restrepo Ronald Mauricio. "Politiques d’exploitation et de maintenance intégrées pour l’optimisation économique, sociétale et environnementale des systèmes de transports urbains interconnectés". Electronic Thesis or Diss., Université de Lorraine, 2021. http://www.theses.fr/2021LORR0069.
Texto completoUrban public transport systems influence the infrastructure of urban areas and the lives of their inhabitants while directly stimulating the economy. Intelligent urban public transport systems help to improve the quality of life and the environment in cities. The rapid development of urban transport solutions has led to a large number of operators entering the market, thus preventing a global optimum. These discrete optimisations, without any articulation between transport operators, avoid the identification of a global optimum. As a result, the inefficient operation of urban public transport systems does not necessarily reduce the environmental cost. To address these challenges, this thesis proposes a methodology associated with mathematical models developing optimisation approaches for multimodal public transport networks, for achieving the best service policy while minimising operation costs in order to satisfy the principle of sustainability, frequently expressed in urban development goals
Volanschi, Eugene. "Une approche automatique à la spécialisation de composants système". Rennes 1, 1998. http://www.theses.fr/1998REN10021.
Texto completoAbbes, Fatma. "Encapsulation des composants virtuels dans un système sur puce". Lorient, 2007. http://www.theses.fr/2007LORIS088.
Texto completoIn order to manage the system-on-a-chip (SoC) increasing complexity, a promising way consists of the reuse concept of preconceived hardware or software blocks. An important aspect of a core’s marketability is its ability to be easily integrated into a SoC since IP must be usable in many different application contexts. Integrating Intellectual Property (IP) components into SoC design requires the use of a hardware/software interface. This PhD thesis deals with interconnection design between IP cores (Intellectual Property) in a System on Chip. This work was undertaken jointly in the team “IP Design” of the L. E. S. T. E. R laboratory of the UBS and the C. E. S Group of ENIS. To increase reuse efficiency, quality and productivity of SoC designs, we propose a design approach for packaging the cycle accurate and bit accurate (CA-BA) interface of hardware IPs. Dataflow application based IP are targeted in a SoC/MPSoC design context. This approach provides an interface modelling considering communication adaptation concepts/context. Graph formalism has been established to specify data traffic considering the cycle accurate behaviour at the IP interface and system requirements. Moreover, the approach is built around two main steps: checking compatibility and interface architecture generation. To realize communication adaptation, both the software part (“driver”) and the hardware part (the interface) are generated. A communication interface architecture generator has been implemented as a CAD tool called GIC. This tool is able to choose and to configure generic interface parameters according to applications constraints and system needs through graphs models. It also generates SystemC code of the specified interface for simulation and synthesisable VHDL code for synthesis. This work has been tested on a multimedia application (“pipeline 3D”). It shows that the adopted interface is independent of the use context and that the approach can be used for automating IPs integration
Broto, Laurent. "Support langage et système pour l'administration autonome". Phd thesis, Université Paul Sabatier - Toulouse III, 2008. http://tel.archives-ouvertes.fr/tel-00524704.
Texto completoGuerlet, Edwige. "Utilisation de biomarqueurs cellulaires chez plusieurs espèces d'invertébrés pour l'évaluation de la contamination des milieux duçaquicoles". Thesis, Metz, 2007. http://www.theses.fr/2007METZ057S/document.
Texto completoTo validate a cellular biomarker suite, we studied the lysosomal and peroxisomal structures as well as the variations of the lipofuscin and unsaturated neutral lipid contents in the digestive tissues of several freshwater invertebrates, by using histochemistry coupled to image analysis. Cellular responses, studied through field and laboratory experiments proved relevant to highlight contamination gradients. The most frequent response profiles in molluscs were lysosomal enlargement, unsaturated neutral lipid depletions, lipofuscin accumulations and a more voluminous peroxisomal system. These early cellular responses may be associated, at the individual level, to a desynchronisation of the reproduction or to decreased condition index. A long-term monthly experiment showed no seasonal baseline levels of these biomarkers and underlined the important influence of trophic factors on the unsaturated neutral lipid contents. A 15-day depuration period of the bivalve, Dreissean polymorpha, at the site of origin after an exposure to a comparison of integrative analysis tools proved that the whole biomarker suite discriminates better between sites than individual responses
Omnes, Franck. "Elaboration par Lp-mocvd du système GaAs-Gainp : application aux composants". Paris 6, 1993. http://www.theses.fr/1993PA066194.
Texto completoDupuch, Angélique. "Comportement dynamique des prédateurs et des proies dans un système à plusieurs habitats". Thèse, Université du Québec à Trois-Rivières, 2008. http://depot-e.uqtr.ca/1259/1/030077769.pdf.
Texto completoAbdelatif, Radhia. "Etude de plusieurs problèmes de dénombrement liés à la numération binaire". Paris 6, 1986. http://www.theses.fr/1986PA066100.
Texto completoGillon, Frédéric. "Méthodologies de Conception Optimale des Composants Electromagnétiques". Habilitation à diriger des recherches, Université des Sciences et Technologie de Lille - Lille I, 2009. http://tel.archives-ouvertes.fr/tel-00734814.
Texto completoSureau, Frédéric. "Un système de composants distribué pour les réseaux de capteurs sans-fils". Mémoire, Université de Sherbrooke, 2011. http://savoirs.usherbrooke.ca/handle/11143/1597.
Texto completoYang, Hai. "Etude d’un système de fabrication agile mobile pour composants de grande taille". Thesis, Montpellier 2, 2012. http://www.theses.fr/2012MON20042/document.
Texto completoIndustrial robots, well known as flexible and agile manufacturing systems, reach their limits when dealing with very large workpieces (e.g.: very long and slender parts found in aeronautics industry). For such tasks, existing solutions are at their limits: stationary manipulator arms suffer from a too limited workspace; manipulators mounted on a vehicle are not accurate enough; classical machine-tools must be designed at mega-scale (several tens of meters). This thesis work aims at offering an innovative robotic solution that combines the ability to walk (or climb) on the workpiece (or on the tooling that supports the workpieces) together with manufacturing ability. From the topology and mobility analysis to the geometrics and kinematics modeling, as well as innovative control algorithms proposition, the proposed mobile manufacturing robots have been studied for achieving both machining and locomotion tasks. A prototype has been built to show the concept effectiveness . It is based on a parallel mechanism with actuation redundancy (8 motors for 6 degrees-of-freedom), combining motors, brakes, clamping devices and numerous position sensors. The robot can clamp itself on the manufacturing tooling, and then change its configuration to become a walking robot able to reach the next working area
Poulhiès, Marc. "Conception et implantation de système fondé sur les composants. Vers une unification des paradigmes génie logiciel et système". Phd thesis, Grenoble, 2010. http://www.theses.fr/2010GRENM009.
Texto completoSoftware development for embedded systems has many challenges. Ln this thesis, we address those related to the interactions between the three following phases of the software development process: the design phase, the implementation phase and the validation phase. We study the design language characteristics and compilation techniques. Ln our approach, they allow the creation of both an implementation of the system and a model for this implementation. Provided that this model faithfully corresponds to the implementation, the analysis of the model can validate the implemented system. We propose a process for building a language based on software components for which the dynamic behavior is supposed to be given. We illustrate this process with a prototype called Buzz. Buzz uses Think components enriched with their operation al behavioral model in BIP. We developed a compiler for Buzz by extending the current Think compiler. Il generates both an architecture of Think components for the implementation and a BIP model for the analysis. We evaluate Buzz through two experiments. The first ex periment details the software development for an academical example on which we show the soundness of our technical choices. Think provides implementation support (compilation, optimization, deployment) and BIP allows us to verify the system's dynamic properties. The second ex periment focuses on porting to Buzz an application convention ail y developed for a sensor network radio protocol. It underlines the efficiency of our proposaI both in terms of programming language (the result is more structured and simpler than the original code) and in terms of compilation tools and verifications
Poulhiès, Marc. "Conception et Implantation de Système Fondé sur les Composants. Vers une Unification des Paradigmes Génie Logiciel et Système". Phd thesis, Université de Grenoble, 2010. http://tel.archives-ouvertes.fr/tel-00514504.
Texto completoIllayk, Abbas. "Évolution du nombre de composants en panne pour un système réparable non-Markovien". Lille 1, 2003. https://ori-nuxeo.univ-lille1.fr/nuxeo/site/esupversions/8a4c0b86-722d-4ea2-8464-13200e65618f.
Texto completoNazarpour, Hosein. "Surveillance de systèmes à composants multi-threads et distribués". Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAM027/document.
Texto completoComponent-based design is the process leading from given requirements and a set of predefined components to a system meeting the requirements. Components are abstract building blocks encapsulating behavior. They can be composed in order to build composite components. Their composition should be rigorously defined so that it is possible to infer the behavior of composite components from the behavior of their constituents as well as global properties from the properties of individual components. It is, however, generally not possible to ensure or verify the desired property using static verification techniques such as model-checking or static analysis, either because of the state-space explosion problem or because the property can only be decided with information available at runtime (e.g., from the user or the environment). Runtime Verification (RV) is an umbrella term denoting the languages, techniques, and tools for the dynamic verification of system executions against formally-specified behavioral properties. In this context, a run of the system under scrutiny is analyzed using a decision procedure: a monitor. Generally, the monitor may be generated from a user-provided specification (e.g., a temporal-logic formula, an automaton), performs a step-by-step analysis of an execution captured as a sequence of system states, and produces a sequence of verdicts (truth-values taken from a truth-domain) indicating specification satisfaction or violation.This thesis addresses the problem of runtime monitoring multi-threaded and distributed component-based systems with multi-party interactions (CBSs). Although, neither the exact model nor the behavior of the system are known (black box system), the semantic of such CBSs can be modeled with labeled transition systems (LTSs). Inspiring from conformance testing theory, we refer to this as the monitoring hypothesis. Our monitoring hypothesis makes our approach oblivious of (i) the behavior of the CBSs, and (ii) how this behavior is obtained. We consider a general abstract semantic model of CBSs consisting of a set of intrinsically independent components whose interactions are managed by several schedulers. Using such an abstract model, one can obtain systems with different degrees of parallelism, such as sequential, multi-threaded and distributed systems. When monitoring concurrent (multi-threaded and distributed) CBSs, the problem that arises is that a global state of the system is not available at runtime, since the schedulers execute interactions even by knowing the partial state of the system. Moreover, in distributed systems the total ordering of the execution of the interaction is not observable. A naive solution to these problems would be to plug in a monitor which would however force the system to synchronize in order to obtain the sequence of global states as well as the total ordering of the executions at runtime Such a solution would defeat the whole purpose of having concurrent executions and distributed systems. We define two approaches for the monitoring of multi-threaded and distributed CBSs. In both approaches, we instrument the system to retrieve the local events of the schedulers. Local events are sent to an online monitor which reconstructs on-the-fly the set of global traces that are i) compatible with the local traces of the schedulers, and ii) suitable for monitoring purposes, in a concurrency-preserving fashion
Cliche, Jean-François. "Réalisation et caractérisation de composants d'un système de communication optique à multiplexage en fréquence". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0003/NQ39343.pdf.
Texto completoMenye, Jean Baptiste. "Validation de la maintenabilité et de la disponibilité en conception d'un système multi-composants". Thesis, Université Laval, 2009. http://www.theses.ulaval.ca/2009/26578/26578.pdf.
Texto completoMenye, Jean-Baptiste. "Validation de la maintenabilité et de la disponibilité en conception d'un système multi-composants". Doctoral thesis, Université Laval, 2009. http://hdl.handle.net/20.500.11794/21935.
Texto completoLa problématique abordée dans cette thèse concerne la prise en compte et la validation, au stade de la conception, de la maintenabilité et de la disponibilité des systèmes multi composants. Chaque composant est assujetti à des défaillances aléatoires. La défaillance d'un composant entraine la défaillance du système. À chaque composant i on associe un taux de défaillance [Lambda] et une moyenne des temps techniques de réparation MTTR, . Le taux de panne est généralement obtenu à partir de bases de données disponibles ou à partir d'essais accélérés sur des prototypes physiques ou virtuels. Le MTTR, dépend de la structure du système, des types de liaisons utilisés, de l'accessibilité, de l'outillage, de la compétence du réparateur, de l'environnement, des procédures de diagnostic et de localisation des défaillances et des procédures utilisées pour effectuer les tests de bon fonctionnement. La maintenabilité et la disponibilité sont généralement validées a posteriori. Cette thèse propose des outils permettant au concepteur de prendre en compte les exigences de maintenabilité (accessibilité, modularité, testabilité...), d'estimer les M777i, , d'évaluer le MTTR du système et enfin de déterminer les MTTRi qui minimisent le MTTRi du système et qui maximisent, par le fait même, sa disponibilité. Ces outils font appel aux concepts de fiabilité, d'analyse probabiliste des systèmes, de logistique, à la conception assistée par ordinateur, aux approches de conception pour assemblage et désassemblage et aux outils de la programmation mathématique. Cette thèse aborde aussi la prise en compte du contexte d'exploitation pour atteindre le niveau de disponibilité requis. De plus en plus de constructeurs offrent des services de maintenance à leurs clients. Les contrats de services comportent généralement des articles qui spécifient le niveau de disponibilité désiré. Les conditions d'exploitation et de maintenance ont un impacte significatif sur les coûts et la disponibilité des systèmes. Cette thèse propose des modèles mathématiques pour définir la taille et la composition de l'équipe de maintenance qui permet de garantir un seuil de disponibilité du système tout en respectant des contraintes budgétaires. Ces réalisations ont fait l'objet de trois publications et plus de huit communications. Plusieurs extensions de ces travaux sont en cours de réalisation.
Bacha, Kenza. "Interaction entre les carburants diesel et biodiesel et les composants du système d'injection diesel". Thesis, Mulhouse, 2016. http://www.theses.fr/2016MULH4471.
Texto completoDiesel injection system must withstand more severe operating conditions (pressure, temperature), and be compatible with the evolution of diesel fuel, such as the introduction of Fatty Acid Methyl Esters (FAME) and use of different additives, which may affect the durability of the vehicle, following the formation of deposits. The objective of this work is to understand the mechanisms of deposit formation from fuel oxidation and determine the major parameters involved in deposit-substrate interactions (surface condition, materials, geometry, temperature...). Two studies were discussed. The first study focuses on the liquid phase accelerated oxidation of Diesel fuel, FAME and mixtures (Diesel / FAME) using PetroOxy device, the oxidation kinetic was determined for the different fuels and characterization of oxidation products was carried out using the (FTIR-ATR, ATG / DTG and GC / MS). The second study was dedicated to the reproduction of deposit on different substrates (aluminum, stainless steel, PEEK, aluminum coating on gold, silcoklean coating on stainless steel) using the Micro Coking device, and characterization of the deposit obtained in each case using (FTIR-ATR, ATG / DTG, XPS and FEG). The results of this work permit to determine the impact of FAME nature and FAME concentration on fuel oxidation stability; an hypothesis was proposed to explain deposit formation
Castelan, Anne. "Modélisation de composants d'extraction de la chaleur : application à l'optimisation de système d'électronique de puissance". Thesis, Toulouse 3, 2017. http://www.theses.fr/2017TOU30341/document.
Texto completoThe replacement of hydraulic and pneumatic network embedded in aircraft by electrical network will increase the number of embedded systems to ensure the effective functioning of the aircraft. The development of an electrical aircraft will allow the reduction of production and functioning costs. It will also help ensure a better reliability of systems and will reduce the ecological impact of the aircraft circulation. This kind of plane would be lighter than a usual one. To be sure of this, it is necessary to reduce weight of embedded equipment's dedicated to management, conversion and distribution of electrical energy. The sizing and the optimization of embedded equipment's weight is a critical issue in the development of more electrical aircraft. This weight is mostly defined by heat transfer systems, when we consider the sizing of energy conversion system A lot of heat transfer system exists and are dedicated to the cooling of power converters. We selected two of these heat transfer system, in order to produce models of them. These models will be used in optimization routines. Plate fin heat sink in forced convection, and system assembly, combining heat pipe and plate fin heat sink, will be modelled during this thesis. Analytical models of these heat transfer systems will be developed, to optimize their weight and ensure a good cooling of electrical systems. Even if lots of dimensioning and optimization methods exists, dedicated to heat transfer systems, we choose to use analytical modelling. This kind of models gives an exact solution to the heat equation, to describe simple geometric and thermic configurations. Selected heat transfer systems can be simply described. The main advantage of these models is that it represents the thermal behavior of the system as a function of its geometrical parameters, materials and environmental conditions. Execution of these models is very fast and gives a precise solution of the thermal parameters of the described configuration. There is then a real interest to use this type of models to optimize weight of heat transfer systems, and then power converter
Le, guyadec Mathias. "Dimensionnement multi-physique des véhicules hybrides, de leurs composants et de la commande du système". Thesis, Université Grenoble Alpes (ComUE), 2018. http://www.theses.fr/2018GREAT071/document.
Texto completoRoad transportation has a huge impact on the environment. Hybrid electric vehicles (HEV) are an interesting alternative, especially for urban uses. However, HEV are complex systems to design because of the strong interaction between the component sizing, the energy management and the driving cycle.V. Reinbold previously developed a sizing methodology for HEV. The components and the energy management are simultaneously optimized to reduce the fuel consumption of the vehicle over a driving cycle. A specific electromagnetic model is used during the optimization process to describe accurately the electrical machine.As a continuation, we introduce firstly the possibility to deal with discrete variables such as the pole number of the electrical machine. Then, we develop a thermal model of the machine considering the convection exchanges around the end-windings. This analytical lumped parameter thermal network is used during the optimization process after being validated thanks to a finite element model. Uncertainty and sensitivity analysis are used to check the influence of some of the thermal parameters. Finally, the sizing methodology is applied to a series/parallel HEV including two electrical machines
Navon, Yotam. "Interaction des composants de la paroi cellulaire végétale : vers un système de modèle bio-inspiré". Thesis, Université Grenoble Alpes, 2020. http://www.theses.fr/2020GRALV006.
Texto completoThe goal of this work was to develop an in vitro model of the plant primary cell wall. A bottom up approach was chosen for the rational design of 2D and 3D constructs made of a lipid membrane, cellulose nano crystals (CNCs) and xyloglucan (XG). First, the interaction between the building blocks was probed using light scattering, isothermal titration calorimetry, quartz crystal microbalance and electron microscopy, revealing firstly the electrostatic nature of the interaction between CNCs and a lipidic membrane and secondly, specific interaction between CNCs and XG in a precise stoichiometric ratio. Then, the optimal parameters from the interaction studies were used to obtain 2D and 3D structures by depositing alternating layers of CNCs and XG on flat substrates (multilayered films) and giant unilamellar vesicles (GUVs). A linear growth of the films was revealed by atomic force microscopy (AFM) experiments while the response of decorated vesicles to osmotic shocks lead to their buckling due to the rigidification of the lipid membrane. Finally, the mechanical properties of the constructs were characterized using AFM indentation, revealing a Young's modulus of few hundred kPa, similarly to what is observed for real plant cell walls
Himpens, Sabine. "Caractérisation du système à deux composants SenX3/RegX3 de Mycobacterium tuberculosis et Mycobacterium bovis BCG". Lille 1, 1999. https://pepite-depot.univ-lille.fr/LIBRE/Th_Num/1999/50376-1999-159.pdf.
Texto completoDe plus, nous n'avons pas observé d'effet majeur de la phosphorylation sur la liaison à l'ADN et la structure quaternaire de regX3. Ces observations suggèrent que la phosphorylation de regX3 pourrait exercer un effet d'activation en favorisant des interactions protéine-protéine avec l'ARN polymérase. En outre, une analyse plus détaillée du mécanisme de phosphorylation du capteur senX3 a été effectuée pour déterminer si comme les autres capteurs étudiés jusqu'à présent, les domaines cytoplasmiques de ces protéines se dimérisent et sont phosphorylés en trans. Cette étude a été effectuée en vue d'explorer la possibilité de produire ultérieurement une version mutante a effet dominant négatif in vivo. Par ailleurs, notre système de phosphorylation in vitro de senX3/regX3 pourrait permettre la recherche de molécules inhibitrices de systèmes à deux composants mycobactériens, qui pourraient correspondre à de nouvelles classes d'antibiotiques
Leduc, Michèle. "Conséquences immunologiques du microchimérisme foetal et maternel dans plusieurs modèles murins". Paris 6, 2009. http://www.theses.fr/2009PA066485.
Texto completoGrondin, Guillaume. "MaDcAr-Agent : un modèle d'agents auto-adaptables à base de composants". Phd thesis, Ecole Nationale Supérieure des Mines de Saint-Etienne, 2008. http://tel.archives-ouvertes.fr/tel-00775866.
Texto completoGarcia-Fernandez, Thibault. "Conception et développement de composants pour logiciel temps réel embarqués". Nantes, 2005. http://www.theses.fr/2005NANT2066.
Texto completoThe work presented in this thesis is relative to the design and the validation of a real-time operating system, namely CLEOPATRE ( Composants Logiciels sur Etagères Ouverts Pour Applications Temps-Réel Embarquées). This operating system has the main characteristics to be presented in the form of free open source components which are interchangeable and selectable according to the profile of the concerned application. The objective being also to take part in the evolution of Linux, the most famous open source operating system, this library has been designed as a patch attached to Linux via RTAI. It integrates innovating functionalities mainly as regards timing fault- tolerance, real-time scheduling and resource management, able to jointly cope with periodic and aperiodic tasks, critical and non-critical tasks. The development phase that, in particular uses the Aspect Oriented Programming, has continued by a validation phase to evaluate the temporal performances and test the applicability and inter-operability of the components
Benzitouni, Mohamed Reda Abdel Aziz. "Étude et Implémentation d'une méthode de coordination de composants dans un Système à Évènements Discrets Répartis". Mémoire, Université de Sherbrooke, 2007. http://savoirs.usherbrooke.ca/handle/11143/1370.
Texto completoBouvard, Kéomany. "Planification de la maintenance basée sur la dégradation de composants : application à un véhicule industriel". Thesis, Lille 1, 2010. http://www.theses.fr/2010LIL10190.
Texto completoThis thesis deals with the maintenance operation scheduling issues of commercial vehicles. It is a CIFRE collaboration between the Volvo group, LAGIS and LM2S laboratories. The aim is to suggest a maintenance scheduling service adapted to the vehicle with an optimized maintenance cost.The vehicle is considered as a multi-component system. For each component, the optimal maintenance dates are computed using a maintenance cost function. This cost function depends on the preventive cost, the corrective cost and possibly the inspection cost, and also on the component failure probability function. In our system, two types of components are defined according to the available component state information : age or degradation level. The failure probability function is fixed a priori for the first component class while it is updated at each inspection for deteriorating and monitored components.The maintenance operations are grouped on a rolling horizon. Some operations must be shifted from their optimal maintenance dates, which implies a penalty cost. The maintenance scheduling depends on the set-up cost, the penalty cost of each operation, and a minimal time interval between two maintenance groups which represents the preparation time. The set-up costs depend on the number of maintenance stops. The saving cost is computed from the difference between the maintenance cost with individual operations and the maintenance cost with the defined operation groups. The developed algorithm provides the optimal maintenance planning according to the available degradation data and the operational constraints. Maintenance scheduling is updated at the next inspection date
Lichterowicz, Pierre. "Finance, culture et standardisation : l’évolution des composants de marché". Thesis, Lyon 2, 2012. http://www.theses.fr/2012LYO22022/document.
Texto completoFinancial market components can be seen as a global credit production system. We call this global intermediation chain and its different links the Financial Assets Production System (FAPS).Institutional economics (Veblen, Coase, North, Williamson) provide some guidelines and tools to understand the production and distribution processes of financial assets. The aim is to describe, using examples, the way asset production is national specific. “Nationality defines organizational rationality”. This hypothesis is supported by some findings in anthropology, sociology, political science, history and the intercultural management school. “Institution and culture matter” is the motto of institutional approach. National culture, a specific level of cultural approach, has a readable impact on some market components and related functioning.But if market organization is national specific, what could be the impact of the on-going roll-out of international technical standards on those cultural layers. If standards are national culture erasers does it mean that there is a culture-free market model? And that a universal functional isomorphism, due to standards usage, provides more rational market practices to global players? Our findings are that national cultural market practices are not disappearing with standards global roll-out. Most of the time national cultures are still embedded in universal standards used by market players. The swift development of Ethical Finance seems to support the idea that domestic cultures are still strong drivers in financial markets set up
Mendizabal, Laurent. "Fiabilité de diodes laser DFB 1,55 um pour des applications de télécommnication : approche statistique et interaction composant-système". Bordeaux 1, 2006. http://www.theses.fr/2006BOR13141.
Texto completoChardigny, Sylvain. "Extraction d'une architecture logicielle à base de composants depuis un système orienté objet. Une aproche par exploration". Phd thesis, Université de Nantes, 2009. http://tel.archives-ouvertes.fr/tel-00456367.
Texto completoChardigny, Sylvain. "Extraction d'une architecture logicielle à base de composants depuis un système orienté objet : une approche par exploration". Nantes, 2009. http://www.theses.fr/2009NANT2115.
Texto completoSoftware architecture modeling and representation are a main phase of the development process of complex systems. In fact, software architecture representation provides many advantages during all phases of software life cycle. Nevertheless, for many systems, like legacy or eroded ones, there is no available representation of their architectures. In order to benefit from this representation, we propose, in this thesis, an approach called ROMANTIC which focuses on extracting a component-based architecture of an existing object-oriented system. This extraction is a balancing problem of competing constraints which aims at obtaining the best architecture that can be abstracted from a system. Consequently, the main idea of this approach is to propose a quasi-automatic process of architecture identification by formulating it as a search-based problem. The latter acts on the space composed of all possible architectures abstracting the object-oriented system and use the architectural semantic and quality to choose the best solution. The process uses the intentional system architecture by means of the documentation and the architect's recommendations
Hamoui, Mohamad Fady. "Un système multi-agents à base de composants pour l’adaptation autonomique au contexte – Application à la domotique". Thesis, Montpellier 2, 2010. http://www.theses.fr/2010MON20088/document.
Texto completoHome automation environments are ubiquitous environments where domestic devices, scattered throughout a home, provide services that can be used remotely over a network. Home automation systems are proposed to enable the users of controlling the devices according to their needs. Ideally, these systems orchestrate the execution of the services provided by the devices to achieve complex services. Even more, these systems must adapt to the variety of environments in terms of devices and users needs. They must also be able to adapt dynamically, if possible in an autonomous manner, to the changes of their execution context (appearance or disappearance of a device, changing needs).In this thesis, we provide an answer to this problematic with SAASHA, a multi-agent home automation system based on components. The combination of these two paradigms enables managing the adaptation on three levels: presentation (user interface), organization (system architecture) and behavior (internal architecture of agents). The agents perceive their context and its changes. The Users are offered a dynamic view of the context allowing them to define custom scenarios as rules. The agents divide the roles among them to realize the scenarios. They modify dynamically their internal architecture throughout the generation, deployment and assembly of components to adopt new device control behaviors and scenarios. The agents collaborate to execute the scenarios. In case of a change, these three levels of adaptation are updated dynamically and autonomously to maintain the service continuity. A SAASHA prototype, based on UPnP and OSGi industry standards, has been developed to assess the feasibility of our proposal
Parent, Guillaume. "Evaluation de la durée de vie de composants électroniques de puissance commerciaux soumis à plusieurs tests de vieillissement et détermination des mécanismes de défaillance". Phd thesis, Toulouse, INPT, 2017. http://oatao.univ-toulouse.fr/17829/1/Parent_G.pdf.
Texto completoAbdmouleh, Anis. "Composants pour la modélisation des processus métier en productique, basés sur CIMOSA". Metz, 2004. http://docnum.univ-lorraine.fr/public/UPV-M/Theses/2004/Abdmouleh.Anis.SMZ0415.pdf.
Texto completoThis thesis work is a part of the project CAS (CIMOSA Application Server) which consists in setting up an information system (I. S. ) useful for enterprise systems and applications design. The core of this I. S. Is a common referential for a chain of enterprises. Indeed, the work thesis was focusing on designing such referential, which allows to model enterprise systems through their business processes. This must be fulfilled by respecting the common objectives of the chain. Thus, the resulting models are capitalized in a systems repository of each enterprise, where they are shared to develop business process applications. The referential offers a methodology of modeling which is integrated in a meta-model based on CIMOSA approach. The physical implementation of this meta-model was realized by "autonomous" and reusable components, which we called: "Enterprise Modeling Components" (E. M. C. ). The design of the meta-model and the components is formalized by the Unified Modeling Language (U. M. L. ) to facilitate subsequent improvements and computing development. To validate the approach, a software prototype of a framework has been developed while referring to the E. M. C. Components. The framework objectives are automating the enterprise systems modeling. The models capitalization ensured by the module S. I. R. S. (Système Interactif de Recherche de Séquences "Interactive System for Sequences Search") existent in the Laboratory. The prototype has been developed with Visual BASIC language in object-oriented programming
Delinchant, Benoît. "La CAO et l'optimisation de systèmes, une approche par couplages dynamiques de composants". Habilitation à diriger des recherches, Université de Grenoble, 2011. http://tel.archives-ouvertes.fr/tel-00677457.
Texto completoHachichi, Assia. "Container Virtuel Machine : une plate-forme générique pour l'adaptation dynamique des services système dans les intergiciels orientés composants". Paris 6, 2006. http://www.theses.fr/2006PA066614.
Texto completoDupré, Elian. "La régulation de la virulence chez Bordetella pertussis : BvgS, modèle original de capteur de système à deux composants". Thesis, Lille 2, 2013. http://www.theses.fr/2013LIL2S022/document.
Texto completoVirulence of Bordetella pertussis, the whooping cough agent, is due to a plethora of virulence factors which expression is regulated by the two-component system BvgAS. BvgA is a classical response regulator and BvgS the sensor. BvgS contains 3 putative sensor domains, 2 periplasmic Venus FlyTrap (VFT), linked through a transmembrane segment to a cytoplasmic PAS domain preceding the histidine-kinase. Signals perceived by those sensor domains are still unknown, but a 37°C temperature is sufficient to maintain the system active under laboratory conditions. This activity can be down-modulated by chemical compounds, such as MgSO4 or nicotinate, which at sufficient concentration allows the bacteria to switch to avirulent phase.We investigated the role of BvgS VFT domains. VFTs are ubiquitous domains composed of 2 lobes linked by a hinge hence forming a cleft where a specific ligand can bind and stabilize the VFT in its closed conformation.BvgS VFT domains were crystalized and form an intricate dimer defining large interfaces between the 4 VFTs. VFT2s are closed without a ligand and VFT1s are opened, artificial closure of these domains via a disulfide bond indicates that this is the active conformation of BvgS. The role of the interfaces was probed by site-directed mutagenesis. A positive signal might originate from the periplasm to be transmitted through the membrane by the interfaces and integrated by a functional coupling between the VFT2s and the helices preceding the membrane, H19.These helices should be continued through the membrane and the cytoplasm to the PAS domain. Pas domains are ubiquitous with a highly conserved structure, a 5 stranded sheet surrounded by helices defining a cavity. Pas domains are involved in a wide variety of physiological processes, depending on their ability to bind a ligand. Some PAS might function without a ligand and could then be signal adaptors or amplifiers.We demonstrated PASBvg was dimeric, confirming the dimeric nature of BvgS. Cavity residues were substituted indicating that integrity of the cavity is necessary to maintain activity and modulation capacity coming from the periplasmic moiety. Ligand binding wasn’t demonstrated but couldn’t be excluded. Some residues are needed for the correct coupling of the PAS domain to its flanking helices and hence signal transmission. Loss of these connections generates a strong destabilization of PASBvg and turns BvgS inactive.A positive signal might come from the periplasmic moiety and shoul be maintaines by the PAS domain, which is in a rigid conformation also allowing the transmission of negative signals
Saidi, Rajaa. "Conception et usage des composants métier processus pour les systèmes d'information". Phd thesis, Grenoble INPG, 2009. http://www.theses.fr/2009INPG0093.
Texto completoInformation Systems (IS) with the same business domain manage similar concepts. These concepts can be analyzed and generalized in abstractions reused in new developments. Such abstractions are called Business Components (BC). However, it is often difficult to express criteria of reuse, particularly how to identify, specify, organize and largely automate the reuse of the BC. The contributions of this thesis address this issue and focus on three main results. The first contribution concerns a process BC model called “PBC”. This model focuses on the functional properties of components. Emphasis is placed on the completeness and the variability of the solution expressed in the form of four complementary views incorporating variation points. Variability integration has led to an UML profile that can be used to model reusable and flexible processes. The second contribution proposes a specification process of a PBC according to the proposed model. In this process, we propose a set of rules for construction, translation and consistency to ensure the traceability of artifacts produced throughout the cycle of development. The third contribution is related to a set of guidelines to assist the IS engineer at the PBC reuse. Emphasis is placed on the proposal of the documentation and the classification of PBC validated in a component storage environment. We also propose an imitation process incorporated into the Symphony method to take advantage of the specification of a PBC in the design of an IS. All proposals are accompanied by tools and experiments used as supports of validation and implementation of the achieved works
Saidi, Rajaa. "Conception et usage des composants métier processus pour les systèmes d'information". Phd thesis, Grenoble INPG, 2009. http://tel.archives-ouvertes.fr/tel-00430497.
Texto completoChabrol, Damien. "Etude, conception et mise en oeuvre d'un protocole de communication synchrone tolérant aux fautes et prédictible sur des composants réseaux standards". Paris 11, 2006. http://www.theses.fr/2006PA112055.
Texto completoThis PhD thesis contributes to the design and realization of safety-critical real-time systems over multiprocessor architectures with distributed memory. They are an essential component of computing systems intended to ensure complex and critical functions. This PhD thesis concerns essentially communications media which conditions strongly the capability of the system to respect the timeliness property and the dependability requirements. Our contribution is distinguished by these following points:-The design of predictable and fault-tolerant synchronous communication protocol;-The study and the definition of the execution model to the efficient and safe communications management;-The proposal of a method to generate automatically the communications scheduling. Our approach is based on communication model which allows the analysis of the feasibility, before execution, of a distributed safety-critical real-time system with timeliness and safety requirements guarantees. This leads to define a execution model based on a time-triggered and parallel communications management. A constraints system is generated automatically to compute network scheduling in checking the network load and the timeliness respect. Then, the proposed communications interface is based on a TDMA protocol, with a advanced version, which allows to use as well as proprietary components (TTP, FlexRay) than standard components. These PhD works have been realized and integrated into an extended development package of the OASIS project from the CEA/Saclay
Touiki, Khalid. "Étude des effets du tabac et de composants du tabac sur les neurones sérotoninergiques in vivo chez le rat". Paris 12, 2007. http://www.theses.fr/2007PA120025.
Texto completoStudies have shown relationships between tobacco consumption and depression. It has also been shown that offspring of smoking mothers show greater tendency towards mood alterations as adults. The serotonergic (5-HT) systems is the brain neurotransmitter system most strongly implicated in depression and its treatment. The aim of the present work was to evaluate the effects of nicotine and other major tobacco components on 5-HT neurotransmission by using an electrophysiological model : the firing of dorsal raphe nucleus 5-HT neurons captured in vivo in anaesthetised rats. The results show that : - Acute administration of : nicotine, harmane, nornicotine and anabasine inhibit the firing of 5-HT neurons. Although harmane is a monoamine oxidase-A inhibitor, its inhibiting effects on 5-HT neurons is unrelated to this fact. The effects of harmane on 5-HT neurons differ from those of nicotine. Nicotine, nornicotine and anabasine effects were similar and involve nicotinic receptors. Repeated nicotine injections desensitize neurons. Tobacco extracts and smoke extracts have a nicotine-like effect but one much more marked than the effects of nicotine alone. - Chronic nicotine administration dose-dependently afters the sensitivity of 5-HT neurons to citalopram (a selective serotonin recapture inhibitor), without modifying the basal firing of neurons. - Adult offspring of female rats pretreated with nicotine during gestation show an increase of basal firing of 5-HT neurons and an absence of desensitization of neurons during repeated acute injections of nicotine
Valton, Julien. "Réaction d'hydroxylation aromatique catalysée par une hydroxylase flavine-dépendante à deux composants : le système ActVA-ActVB de Streptomyces coelicolor". Phd thesis, Université de Grenoble, 2005. http://tel.archives-ouvertes.fr/tel-00823949.
Texto completoChambéry, Daniel. "Etude de l'expression des composants du système insulin-like growth factor (igf) dans un modèle dérivé d'un neuroblastome humain". Paris 5, 1999. http://www.theses.fr/1999PA055014.
Texto completoComenge, Yannick. "Caractérisation du système à deux composants CroRS et implication dans la résistance intrinsèque aux beta-lactamines de Enterococcus faecalis". Paris 7, 2004. http://www.theses.fr/2004PA077040.
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